1. Add arrows to edit dropdowns
2. Adjust lightened fields so they don't look like input boxes, and fix
rgba colours
3. Add ability to click file names to edit
4. Add feedback when edit button is hovered
5. Add feedback if a file has been opened for editing and shut again
(saved changes, unsaved changes, unchanged)
6. Add ability to open and close all files to edit them all at once
7. Add overall feedback for file uploads, and fix NaN error
8. Fix up area to match design
9. Fix error messages so they fit in the provided space
10. Fix case where a single uploaded file errors
